Senior AI Infra Engineer: Scalable Sandboxes & Agents

Echelon; San Francisco (CA); On-site; USD 180,000 - 280,000; Full time

Benefits offered by this job

Health insurance

Dental insurance

Vision insurance

401(k)

Team meals

Unlimited PTO

Job summary

Echelon in San Francisco is building the AI platform for BizOps. We seek an engineer to design and operate sandbox lifecycle systems for agent code execution, browser work, document processing, and tool use. You will optimize startup time, ensure tenant isolation, durability of long-running jobs, and scale orchestration as workloads grow.

Strong Linux, Kubernetes, IaC, and cloud experience required. Join an early-stage company shipping production systems, working directly with founders and

Qualifications

• 5+ years building production infrastructure, distributed systems, or execution runtimes.
• Hands-on ownership of containerized workloads in a multi-tenant production environment.
• Strong Linux systems knowledge across processes, filesystems, networking, and performance.

Responsibilities

• Design and operate sandbox lifecycle systems for agent code execution, browser work, document processing, and tool use.
• Improve sandbox startup time, density, scheduling, warm pools, caching, and resource utilization.
• Build fast, reliable filesystem primitives for episodic and persistent agent state and large artifacts.
• Enforce tenant isolation, network policy, secrets boundaries, quotas, and least-privilege access.
• Make long-running agent jobs durable through checkpointing, retries, idempotency, cancellation, and recovery.
• Scale orchestration and control-plane services with growth and bursts.
• Build observability for resource pressure, execution failures, queue health, and end-to-end latency.

Skills

Production infra

Distributed systems

Container workloads

Kubernetes

Go

Rust

Performance tuning

Tools

Terraform

AWS

Job description

Echelon in San Francisco is building the AI platform for BizOps. We seek an engineer to design and operate sandbox lifecycle systems for agent code execution, browser work, document processing, and tool use. You will optimize startup time, ensure tenant isolation, durability of long-running jobs, and scale orchestration as workloads grow.

Strong Linux, Kubernetes, IaC, and cloud experience required. Join an early-stage company shipping production systems, working directly with founders and